Calculate hours between two timestamps, excluding weekends

Hi folks,

Being able to measure duration between tasks seems to be a fairly common business requirement. So far we have DATETIME_DIFF which is great because it lets you specify the unit of measurement (day, hour, minute etc). However it will also include weekend days. The WORKDAY_DIFF is great as it excludes weekends but unfortunately it only has one unit - day.

So my feature request - either add ‘unit’ as an option to WORKDAY_DIFF or create a new function called WORKTIME_DIFF.